Kuwait on Monday opened a week of conferences seeking aid for rebuilding Iraq after the onslaught of the Islamic State group, seeking tens of billions of dollars for a nation only a generation ago that invaded it.

Of the money needed, Iraqi officials estimate $17 billion alone needs to go toward rebuilding homes, the biggest single line item offered Monday on the first day of meetings.

The United Nations estimates 40,000 homes need to be rebuilt in Mosul alone.

The war against the Islamic State group displaced more than 5 million people.

It announced $330 million alone had been pledged Monday for Iraq at a humanitarian conference in Kuwait City.